How do I make a default selection in ComboBox ?

[arjun]

Hello people,

Am facing a problem while trying to make a default selection in a ComboBox while loading a page. I mean, I have to make one item as selected, by default, while loading the page. I cant use setValue() method as it can take only Strings and not variables. But based on the back-end value I need to make one of the items in the list as selected by default. How do I do that ? Please help.

Adn this is how my ComboBox looks like:
var fileNameStore = new Ext.data.SimpleStore({
fields: ['value']
});

var newGroupIdNameData = Ext.data.Record.create([
{name: 'value', mapping:'value'}
]);
var fileSelectCombo = new Ext.form.ComboBox({
id: 'fileNameSelect',
store: fileNameStore,
mode: 'local',
editable: false,
valueField: 'value',
displayField: 'value',
typeAhead: true,
triggerAction: 'all',
emptyText: '',
selectOnFocus: true,
width: 150
});
fileSelectCombo.addListener('select', handleFileChange);
Thanks in Advance !

[manube]

Hello,

I think that setting the value attribute will resolve your pb:

var fileSelectCombo = new Ext.form.ComboBox({
id: 'fileNameSelect',
value: 'myValue', //which is supposed to be in the available data!
...

[arjun]

Hi there,

Thanks for the response, but I guess, you didnt get the question properly (Or I didnt put it in a proper way ).... I can set the value by setValue( String value )... But my problem is I dont know the value here.. Its coming from the back-end bean.. So I have to use a variable, not a static string. How do I do that ?

Thanks,
--Arjun-->

[catacaustic]

You do it using the same setValue () method, and instead of the string you use the name of the variable that you've got the value stored in. As a very quick example...

var fileName = 'file.txt';

comboBox.setValue (fileName);

[Charlyva]

try the following in the config of your ComboBox:

value: fileNameStore.getAt(0).get('value'),

Think that will solve your problem. For me that works great

Best Regards from Austria.
Mike

[jgopireddy]

Hi Charlyva ,

this works great.

value: fileNameStore.getAt(0).get('value'),